Improvement in wash-boiler bottoms



O. R. EVERSON. Wash-301181' Bottom.

' Nio. 203,331. vPavtent'ed May 7, 1878-.

PLPETERS. PHOTO-UTHOGRAPMER. WSNINGTDN. D. C. v

UNITED STATES PATEN'I' OFFICE.

CHARLES R. EVERSON, OF MAOEDON, N. Y., ASSIGNOR OF AN UNDIVIDED ONEHALF OF HIS RIGHT TO JEROME WOOLSEY, OF SAME PLAOE.

IMPROVEMENT IN WASH-'BOILER BOTTOMS.

Specification forming part of Letters Patent No. 203,33 l, dated May 7, 1878 application filed July 19, 1875.

To all 'whom it may concern:

Be it known that I, OHARLEs R. EvnRsoN,

of the town of Macedon, in the county of Wayne and State of New York, have invented a new and useful Improvement in Bottoms for Wash-Boilers, of which the following is a speoification The object of my invention is an improved wash-boiler bottom, manufactured by means .of peculiar dies, and possessing greater stiifness, rigidity, and durability than those of the ordinary construction.

Figure lV is a plan view of the improved boiler-bottom; Fig. 2, a longitudinal section on the line'i i, Fig. l; and Fig. 3, a side view,

.showing the dies.

vsoon wearing away.

The bottoms made of two pieces are not only expensive, but are dificult to connect to the sides, are weak, and soon leak at the `joint.

Hitherto it has been considered impossible to form two round pits in one sheet of metal; hence the use of two pieces, as above described. But I have found that by the use of a die, D, having two circular projections with beveled edges and a counter-die, M, having .corresponding recesses, the faces of the dies being absolutely flat, it is possible to form at one operation boiler-bottoms A, Figs. 1 and 2, with two circular pits, P P, having inclined edges 8, and with perfectly smooth unwrinkled faces a. v

a The improved bottom possesses great rigidity and stiffness, so that it will not bend when heavily weighted. It is more durable, and lighter metal can be used in the manufacture, while there are no joints to open and leak.

I claim- 1. A boiler-bottom consisting of a single sheet of metal, flat and unwrinkled at a, and having two pits, P P, as set forth.

2. The dies D M, having circular projections and rece-sses 'and fiat faces, as specified.

In testimony whereof I have hereunto set my hand on this 29th day of June, A. D. 1875.

. A. O. PARsoNs, W. G. BARNEs. 

